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aniked [119]
3 years ago
14

PLZ HELP NO LINKS! WILL GIVE BRAINLIEST!

Mathematics
2 answers:
Marina CMI [18]3 years ago
8 0

Answer:

t = 16.6

Step-by-step explanation:

In the formula:

a = p(1 + r )^{t}

A is the final amount, in this case is 11500 people. P is the initial amount, in this case is 6500 people. r is the growth rate, which in this case is 0.035 - we have to express it s a decimal, not a percent. And finally t is the time, which is the variable we want to find.

Let's clear t first and replace all these values at the end. To clear t we have to leave only the factor which exponent is t on one side of the equation. To do this we have to divide both sides by P:

\frac{a}{p}  =  \frac{p}{p} (1 + r) ^{t}  \\  \frac{a}{p}  = (1 + r)^{t}

Now we have to use the following rule for the exponents and logarithms:

{a}^{x}  = b

Apply logarithms on both sides:

log( {a}^{x}) = log(b)

By the exponents rule of logarithms

x \: log(a) = log(b)

For this problem we have:

log \frac{a}{p}  = log(1 + r)^{t} \\ log \frac{a}{p}   =t \: . \: log(1 + r)

Now we have to divide both sides by log(1+r) to clear t:

log \frac{a}{p}  = t \: .  \: \frac{log(1 + r)}{log(1 + r)}  \\ t =  \frac{log \:  \frac{a}{p} }{log(1 + r)}

And finally we just have to replace the values into this equation we found: A = 11500, P = 6500 and r = 0.035:

t = log  \: \frac{11500}{6500}  \\ log(1 + 0.035) \\ log  \:  \frac{23}{13}  \\ t = log \: 1.035 \\ t = 16.6

Ymorist [56]3 years ago
7 0

Answer:

24,831.28

Step-by-step explanation:

Brainliest pls

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